Flowed it this morning. The only 2.02 3/8 valve I have is a Hughes. It has no back cut. I believe an OE valve would reduce my low and mid lift numbers and increase the numbers around 0.500. The vaporization ridge (if that's what it really is) helps the port 'hold on' a little longer before backing up.
587 head with 1.88 OE valve included as a reference.
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